diff --git a/include/wx/propgrid/props.h b/include/wx/propgrid/props.h
index 84f7d5191c..0e72c8038f 100644
--- a/include/wx/propgrid/props.h
+++ b/include/wx/propgrid/props.h
@@ -148,7 +148,7 @@ enum wxPGNumericValidationConstants
 /**
     A more comprehensive numeric validator class.
 */
-class wxNumericPropertyValidator : public wxTextValidator
+class WXDLLIMPEXP_PROPGRID wxNumericPropertyValidator : public wxTextValidator
 {
 public:
     enum NumericType